HOUSATONIC RIVER BASIN 01205500 HOUSATONIC RIVER AT STEVENSON, CT--Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1952-53, 1955-56, 1959, 1961, 1963, 1968 to current year. PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: November 1974 to September 1981. WATER TEMPERATURES: November 1974 to September 1981. EXTREMES FOR PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: Maximum recorded, 390 microsiemens Sept. 14, 1977; minimum recorded, 46 microsiemens Mar. 25, 1980. WATER TEMPERATURES: Maximum recorded, 30.5C Aug. 3, 6-9, 1976; minimum, 0.0C many days during the winter period. WATER-QUALITY DATA, WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995 DIS- PH OXYGEN, COLI- ENTERO- STREP- CHARGE, SPE- WATER DIS- FORM, COCCI TOCOCCI INST. CIFIC WHOLE SOLVED FECAL, ME,MF FECAL, CUBIC CON- FIELD TEMPER- TEMPER- TUR- OXYGEN, (PER- 0.45 WATER KF AGAR FEET DUCT- (STAND- ATURE ATURE BID- DIS- CENT UM-MF TOTAL (COLS. DATE TIME PER ANCE ARD AIR WATER ITY SOLVED SATUR- (COLS./ (COL / PER SECOND (US/CM) UNITS) (DEG C) (DEG C) (NTU) (MG/L) ATION) 100 ML) 100 ML) 100 ML) (00061) (00095) (00400) (00020) (00010) (00076) (00300) (00301) (31616) (31649) (31673) NOV 16... 1450 4550 284 8.4 12.0 11.0 1.6 9.6 86 <1 K10 K1 JAN 31... 1120 4930 210 7.8 2.5 2.5 1.6 12.8 95 84 K6 28 MAR 27... 1430 2700 211 7.9 16.0 7.5 1.0 12.0 100 <1 K10 24 MAY 15... 1015 4690 234 8.0 13.5 13.0 -- 9.8 93 K1 K1 -- JUL 24... 1000 117 282 7.5 27.5 22.0 0.90 1.4 16 K5 <1 -- SEP 12... 1010 70 300 7.8 20.0 23.0 0.90 6.1 70 K8 K2 -- COLI- CAR- BICAR- ALKA- FORM, HARD- MAGNE- POTAS- BONATE BONATE LINITY CHLO- FLUO- FECAL, NESS CALCIUM SIUM, SODIUM, SIUM, WATER WATER WAT DIS SULFATE RIDE, RIDE, 0.7 TOTAL DIS- DIS- DIS- DIS- DIS IT DIS IT TOT IT DIS- DIS- DIS- UM-MF (MG/L SOLVED SOLVED SOLVED SOLVED FIELD FIELD FIELD SOLVED SOLVED SOLVED DATE (COLS./ AS (MG/L (MG/L (MG/L (MG/L MG/L AS MG/L AS MG/L AS (MG/L (MG/L (MG/L 100 ML) CACO3) AS CA) AS MG) AS NA) AS K) CO3 HCO3 CACO3 AS SO4) AS CL) AS F) (31625) (00900) (00915) (00925) (00930) (00935) (00452) (00453) (39086) (00945) (00940) (00950) NOV 16... K3 110 29 10 12 2.0 0 128 105 12 21 <0.10 JAN 31... 61 71 18 6.2 7.6 1.3 0 75 61 8.7 12 <0.10 MAR 27... -- 81 21 7.0 8.2 1.2 0 83 68 8.8 14 <0.10 MAY 15... -- 98 25 8.7 9.7 1.4 0 104 85 11 15 <0.10 JUL 24... -- 110 29 10 12 1.6 0 103 84 11 18 <0.10 SEP 12... -- 120 30 11 14 2.2 0 135 111 12 21 <0.10 HOUSATONIC RIVER BASIN 01205500 HOUSATONIC RIVER AT STEVENSON, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995 SOLIDS, NITRO- NITRO- NITRO- NITRO- NITRO- SILICA, RESIDUE SOLIDS, GEN, GEN, GEN, NITRO- GEN,AM- GEN,AM- PHOS- DIS- AT 180 RESIDUE NITRITE NO2+NO3 AMMONIA GEN, MONIA + MONIA + NITRO- PHOS- PHORUS SOLVED DEG. C AT 105 DIS- DIS- DIS- ORGANIC ORGANIC ORGANIC GEN, PHORUS DIS- (MG/L DIS- DEG. C, SOLVED SOLVED SOLVED TOTAL TOTAL DIS. TOTAL TOTAL SOLVED DATE AS SOLVED TOTAL (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L SIO2) (MG/L) (MG/L) AS N) AS N) AS N) AS N) AS N) AS N) AS N) AS P) AS P) (00955) (70300) (00500) (00613) (00631) (00608) (00605) (00625) (00623) (00600) (00665) (00666) NOV 16... 2.4 162 162 0.020 0.330 0.100 0.30 0.40 -- 0.73 0.030 0.010 JAN 31... 5.3 122 113 <0.010 0.450 0.040 -- <0.20 <0.20 -- <0.010 0.010 MAR 27... 4.6 114 -- <0.010 0.430 0.020 0.18 0.20 -- 0.63 0.020 0.020 MAY 15... 2.7 123 132 <0.010 0.310 0.050 0.35 0.40 <0.20 0.71 0.140 <0.010 JUL 24... 2.6 158 164 0.040 0.220 0.060 0.24 0.30 0.20 0.52 <0.010 <0.010 SEP 12... 3.4 153 162 0.020 0.070 0.120 0.38 0.50 0.40 0.57 0.030 0.020 PHOS- PHORUS ALUM- ANTI- BERYL- CHRO- ORTHO, INUM, MONY, BARIUM, LIUM, CADMIUM MIUM, COBALT, COPPER, IRON, LEAD, DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED DATE (MG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L AS P) AS AL) AS SB) AS BA) AS BE) AS CD) AS CR) AS CO) AS CU) AS FE) AS PB) (00671) (01106) (01095) (01005) (01010) (01025) (01030) (01035) (01040) (01046) (01049) NOV 16... <0.010 30 -- 15 -- <1.0 <1 <3 1 20 <1 JAN 31... 0.020 20 -- 10 -- <1.0 -- <3 <1 55 <1 MAR 27... 0.010 10 <1 10 <1 <1.0 <1 <3 <1 46 <1 MAY 15... <0.010 10 <1 12 <1 <1.0 <1 <1 1 19 <1 JUL 24... <0.010 6 <1 16 <1 <1.0 1 <1 <1 <3 <1 SEP 12... <0.010 7 <1 15 <1 <1.0 <1 <1 <1 5 <1 MANGA- MOLYB- SELE- STRON- VANA- URANIUM LITHIUM NESE, DENUM, NICKEL, NIUM, SILVER, TIUM, DIUM, ZINC, NATURAL CARBON, DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- ORGANIC SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED TOTAL DATE (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (MG/L AS LI) AS MN) AS MO) AS NI) AS SE) AS AG) AS SR) AS V) AS ZN) AS U) AS C) (01130) (01056) (01060) (01065) (01145) (01075) (01080) (01085) (01090) (22703) (00680) NOV 16... <4 2 <10 <1 <1 <1.0 54 <6 <10 -- 4.0 JAN 31... <4 11 <1 <1 <1 <1.0 35 <6 <10 -- 3.3 MAR 27... <4 13 10 <1 <1 <1.0 37 <6 1 <1.0 3.7 MAY 15... -- 1 <1 1 -- <1.0 -- -- <1 <1.0 3.2 JUL 24... -- 46 <1 2 -- <1.0 -- -- <1 <1.0 3.5 SEP 12... -- 10 <1 1 -- <1.0 -- -- 12 <1.0 4.7